Are dristan sinus caps still being produced?

Oh, yes indeed they are. They just come in a box of 12-16 tablets these days. They're in a red box, with 2 "cards" of punch-out tablets. I can remember when they were available in bottles of 100 back in the 1970's.

Instead of aspirin, they're now being made with acetaminophen (Tylenol) but they still contain the other classic ingredients that made them work so well.

Prices tend to be in the .00 range, and I have not yet seen a generic brand, although that could happen.

They can usually be found at the major drug store chains, and often at Wal-Mart or Target. I've had good luck at RiteAid and Walgreens.